Gate-operating mechanism



e. s, THURSTON. GATE QPERATING MEcHAmsm. APPLICATION FILED NOV= 7. l9l9.

1,367,843. Patented Feb. 8, 1921.

lwuMoz UNITED STATES GEORGE S. THURSTON, OF OAKLAND, CALIFORNIA.

GATE-OPERATING MECHANISM.

Application filed November 7', 1919. Serial No. 336,486.

To (([Z'tU/lOHZ it may concern Be it known that I, Gnonos S. THURSTON, citizen the United States, residing at akland, in the county of Alameda, State of California, have invented certain new and useful Improvements in Gate-Operating Mechanisms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in gate operating mechanisms.

One object of the present invention is to provide a novel and improved means for mounting the hinged end of the gate which is arranged to be so shifted as to cause the automatic unlatching of the gate and the swinging open thereof.

Another object is to provide a novel and improved device of this character which is simple in its construction, and which is easily and quickly operated toward opening or closing movements.

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawing.

In the drawing:

Figure 1 is an elevation of a gate and posts thereof, showing-the novel means for hingedly mounting the gate, with the gate in closed position.

Fig. 2 is a top plan view of the same,the gate being in closed position.

Fig. 3 is a horizontal sectional view taken on the line 33 of Fig. 1, just below the lower horizontal bar of the gate.

Fig. at is an enlarged vertical sectional view taken on the line 1 1- of Fig. 3, showing the stationary and rotatable disks and the bearings therebetween.

Referring particularly to the accompanying drawing, represents the postto which the gate 11 is hinged, and 12 the post which carries the keeper 13 for engagement by the latch 14 carried by the free end of the gate. Extending from the upper portion of the post 10 is an L-shaped arm 1:5, the vert cal portion of which 1s received in an openlng in the adjacent end of a second arm 16 secured to the upper bar of the gate. and so arranged that the extreme end of the gate can swing underneath the hinge, said arms 15 and 16 forming the upper hinge PATENT OFFICE.

Specification of Letters Patent.

Patented Feb. 8, 192i.

of the gate. A metal disk 17 has a flange 18 on one side which is secured to the lower portion of the post 10, beneath the arm 15, by means of the bolts this disk there is formed an opening 20, and in the upper face of the disk, concentric with the opening, there is formed a circular groove 21 for the reception of the bearing balls 22. Disposed on the disk 17 is a second disk 23 which has a central depending stud 24 engaged in the central opening of the disk 17, and by means of which the disk is rotatable on the disk 17, the lower face of the disk 23 being also formed with a circular groove 21 for the reception of the balls 22. Formed on the upper face of the disk 23, eccentrically thereof, and extending vertically therefrom, is a socketed boss 2% which receives the lower portion of the pin 25. The upper portion of this pin is engaged in the lower portion of the hinged end of the gate, as clearly shown in the drawing. The upper disk 28 and the pin 25 form the lower hinge of the gate. In the peripheral face of the upper disk 23 there is formed a groove 26 in which is engaged the intermediate portion of a cable 27. The opposite ends of the cable extend to and are connected with pivotally mounted hand operated levers mounted on posts situated at suitable distances from opposite sides of the gate. As these posts and levers are of well known construction, it is not thought necessary or expedient to illustrate them.

In the operation of the device to open the gate from either side, one end of the cable is pulled whereupon the upper disk 23 will berotated on the ball bearings, carrying the. boss 24 and the pin 25 around, with the result that the lower portion of the gate will be raised so as to disengage the latch from the keeper on the post 12. The gate will be canted at such an angle that it will readily swinginto open position. To close the gate the other end of the cable is pulled, with the result that the disk 23 will be 19. In the center of ,7

turned to a corresponding point at the other 23, whereby the proper swinging of the gate is assured, and the retention of the same in closed position rendered positive.

The cable operating means may be actuated by means of the wheels of a vehicle, if desired. However, both the hand operated and vehicle operated means are old and well known.

\Vhat is claimed is:

In a gate operating mechanism, the combination with a post and a gate, of a stationarypivotal connection between the post and the upper portion of the gate, a bracket mounted on the lower portion of the post and having a central opening and a circular ball race concentrically around the said opening, a peripherally grooved disk having \Vitnesses CLARENCE A. Roenns, ALICE Rocnns. 

